Bill can swim, _______ he can’t sing.
#57157
A
but
B
and
C
or
D
so
推荐题目
______ Kathy was watching TV, her mother asked her to go shopping.
#56706
A
Before
B
Until
C
While
D
After
—Tom, you look tired this morning. What’s wrong?—I was so busy that I didn’t go to bed _____ 12 o’clock last night.
#58255
A
until
B
when
C
though
D
unless